How do you build a gear box for a motor to make a small car?

the gear box has to be made - no prefab gearboxes.

frollard8 years ago
how small is small? lego car? meccano car? rc car? go kart? smart car? 4 door sedan? minivan? quarter-tonne truck? three-quarter-tonne truck? 2 tonne cube-van? 5-tonne highway truck? 18-wheeler? C-train? Light Rail Transit Engine? Commercial transport train? Talk about answering a question with a question!
lemonie8 years ago
Lego?